The Siege of Terra

The Siege of Terra was a major conflict in the Warhammer 40,000 universe, where loyalists fought to save the Emperor of Mankind from his traitorous son, Horus, who led a rebellion. Horus's forces besieged Terra, Earth, aiming to overthrow the Emperor and claim control of the Imperium of Man. It involved intense battles within the planet’s walls, with armies clashing in a desperate struggle. Ultimately, the loyalists managed to defeat Horus, but at great cost, securing humanity's future and solidifying the Emperor’s role as ruler. The event is a pivotal moment shaping the universe’s ongoing lore.